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采用精确测量黑体绝对辐射及其光谱的方法,以普朗克定律和维恩位移定律为基础,研究了用作红外辐射标准的高精度绝对黑体。实验得到黑体辐射、光谱分布及腔室温度场的一系列数据,并和理论值进行了比较。黑体辐射通量的指示误差为0.89%。
Based on Planck’s law and Wien’s law of displacement, the accurate blackbody absolute irradiance and its spectra were used to study the high-precision absolute blackbody used as the standard of infrared radiation. A series of data of black body radiation, spectral distribution and chamber temperature field were obtained and compared with theoretical values. The indicated error of the black body radiation flux is 0.89%.